A verification method and verification device for a transformer short-circuit impedance tester

A short-circuit impedance and verification device technology, which is applied to measuring devices, instruments, and measuring electrical variables, can solve the problems of low reliability of verification results and achieve the effect of improving reliability

Active Publication Date: 2021-08-06
WUHAN PANDIAN TECH
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  • Claims
  • Application Information

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Problems solved by technology

[0006] The embodiment of the present invention provides a verification method and verification device for a transformer short-circuit impedance tester, so as to solve the technical problem that the reliability of the verification result is not high when the standard source method is used to verify the transformer short-circuit impedance tester in the related art

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  • A verification method and verification device for a transformer short-circuit impedance tester
  • A verification method and verification device for a transformer short-circuit impedance tester
  • A verification method and verification device for a transformer short-circuit impedance tester

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Embodiment Construction

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] The embodiment of the present invention provides a verification method for a transformer short-circuit impedance tester, which can solve the technical problem that the reliability of the verification result is not high when the standard source method is used to verify the transformer short-circuit impedance tester in the related art.

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Abstract

The invention discloses a verification method and a verification device of a transformer short-circuit impedance tester, and relates to the field of calibration, verification and detection of electric power test instruments. The parameters are measured, and then the standard transformer short-circuit impedance tester and the transformer short-circuit impedance tester to be tested are used to test the short-circuit impedance of the selected transformer respectively, and the first impedance value and the second impedance value of the selected transformer are obtained; Judgment Whether the relative error between each of the basic parameters and its set value is within the preset relative error, if so, then judge whether the relative error between the second impedance value and the first impedance value is within the preset relative error , if yes, the transformer short-circuit impedance tester to be tested is qualified. The verification method and verification device of the transformer short-circuit impedance tester in the invention can improve the reliability of the verification result of the transformer short-circuit impedance tester.

Description

technical field [0001] The invention relates to the field of calibration, verification and detection of electric power testing instruments, in particular to a verification method and a verification device of a transformer short-circuit impedance tester. Background technique [0002] At present, the transformer is the most commonly used main power equipment in the power system. Its function is to convert low voltage into high voltage for long-distance power transmission; or convert high voltage into low voltage for power supply to end customers. The quality of the transformer and the safety of operation are related to the reliability and safety of the power supply. Therefore, the performance of the transformer needs to be tested through a series of standards, regulations and specifications before leaving the factory. Short-circuit impedance is an important part of the test. . [0003] The transformer short-circuit impedance tester is an instrument used to measure the short-c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R35/00
CPCG01R35/00
Inventor 孙军徐灿胡利峰
Owner WUHAN PANDIAN TECH
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